const createError = require('http-errors');
const express = require('express');
const fs = require('fs');
const path = require('path');
const cookieParser = require('cookie-parser');
const logger = require('morgan');
const session = require('express-session');

// const indexRouter = require('./routes/index');
// const usersRouter = require('./routes/users');
const blogRouter = require('./routes/blog');
const userRouter = require('./routes/user');
const RedisStore = require('connect-redis')(session);

const app = express();

// view engine setup
// app.set('views', path.join(__dirname, 'views'));
// app.set('view engine', 'jade');

const ENV = process.env.NODE_ENV;
if (ENV !== 'production') {
    // 开发环境 / 测试环境
    app.use(logger('dev'));
} else {
    // 线上环境
    const logFileName = path.join(__dirname, 'logs', 'access.log');
    const writeStream = fs.createWriteStream(logFileName, {flags: 'a'});
    app.use(logger('combined', {stream: writeStream}));
}
app.use(express.json());
app.use(express.urlencoded({extended: false}));
app.use(cookieParser());
// app.use(express.static(path.join(__dirname, 'public')));

/*redis处理*/
const redisClient = require('./db/redis');
const sessionStore = new RedisStore({client: redisClient});
/*session处理*/
app.use(session({
    secret: 'Session_encrypt#233',
    cookie: {
        // path: '/', // 默认配置
        // httpOnly: true, // 默认配置
        maxAge: 24 * 60 * 60 * 1000 // 生效时间
    },
    store: sessionStore
}));

// app.use('/', indexRouter);
// app.use('/users', usersRouter);
app.use('/api/blog', blogRouter);
app.use('/api/user', userRouter);

// catch 404 and forward to error handler
app.use(function (req, res, next) {
    next(createError(404));
});

// error handler
app.use(function (err, req, res, next) {
    // set locals, only providing error in development
    res.locals.message = err.message;
    res.locals.error = req.app.get('env') === 'development' ? err : {};

    // render the error page
    res.status(err.status || 500);
    res.render('error');
});

module.exports = app;
